Ore-concentrator



E. Ai WILLIAMS AND A. H. WARD.

ORE CONCENTRATOR.

APPLICATION FILED APR.3, 1919.

Patented Oct. 19, 1920.

3 SHEETS-SHEET I.

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ORE CONCENTRATOR.

APPLICATION FILED APR.-3. 1919.

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ORE CONCENTRATOR.

APPLICATION FILED APR. 3. 1919.

Patented Oct. 19, 1920.

3 SHEETSSHEET 3.

UNITED STATES PATENT OFFICE.

EVERETT A. WILLIAMS AND ALBERT II. WARD, OF LOS A1\TGI .|Il]I1'1S,CALIFORNIA.

ORE-CONCENTRATOR.

' Specification of Letters Patent.

. Pat te Oct. 19, 1920.

. Application filed April 3, 1919. Serial No. 287,268. 2

To all whom it may concern Be it known that we, Evnnn'r'r A. WIL- LIAMSand ALBERT H. W'Ann, citizens of the United States, residing at LosAngeles, in

the county of Los Angeles and State of California, have invented new anduseful 1m provements lIl Ore-Concentrators, of which the following is aspecification.

Our invention relates to ore concentrators Fig. 2 is a top plan viewlooking in the direction indicated by the arrow 2 in Fig. Fig. 3 1s avertical cross section upon an enlarged scale and upon the lines 3'3"of,

Figs. 1 and 2 and looking in the'direction indicated by the arrows. v

Fig. 4 is a fragmentary horizontal section upon a reduced scale and uponthe line 44 of Fig. 3.

Fig. 5 is a the line 5-5 of Fig. 1.1 Fig. 6 is a fragmentaryv verticallongitudinal sectional detail on the line 6-6 of Figs. 2 and 3.

The platform may be constructed of any suitable material and of anysuitable size. Posts 2, 3, 4 and 5'are fixed vertically upon theplatform 1, and each of the posts has braces 6 and 7 extending forwardlyand backwardly. A crosspiece 8 connects the upper ends of the posts 2and 5, and a crosspiece 9 connects the upper ends of the posts 3 and 4.An adjustingscrewlO is mounted vertically through the center of thecrosspiece 8, and a similar adjusting screw ll is mounted verticallythrough the center of the crosspiece 9.

The ore concentrator box 12 is rectangular in plan and has a flat bottom13, straight sides 14 and 15, a head end 16,- and a discharge end 17.The discharge end 17is nor-, mally open. Cleats 18 and 19 are securedto'the inner face of the extreme rear end of the side 15, and similarcleats 20 and, 21 are secured to the inner face of the extreme rear endof the side 14 to make slideways for the end gates 22, said end gates 22being narrow strips fitting in the slideways across the bottom 13 one ontop of the other. I

Rollers 23 and 24 are mounted in brackets fragmentary cross section on25 and 26 secured to the lower face of the bottom 13, so that therollers will travel crosswise of the box. A timber 27 fits upwardlyagainst .the'rollers' 23 and 24, the ends of the timber extending beyondthe sides of the box. Rods 28 and 29 extend through the ends of thetimber 27 and upwardly through a second timber 30, and the adjustingscrew 11 extends through a screw threaded nut plate 31 fixed upon thecrosspiece 9 andthrough the center of the second timber 30 and has abearing 32 upon its lower end below the timber 30 so as to support therear end of the box, and so that by manipulating the handwheel 33 uponthe screw llthe rear end of the box may be raised or lowered. I I

, In a like manner the forward end of the box is mounted upon rollersresting upon a timber connected to the adjusting screw 10 to bemanipulated bytthe handwheel 34 so that the rear end of the box may beraised or lowered by manipulating the handwheel 34. i

, Cleats 35 and 36 (see Fig. 4) are secured to the inner face of thepost 3 to make a vertical slideway, and similar cleats 37 and 38 aresecured to the inner face of the post 4 to make a second verticalslideway, and the ends of the timbers 27 and 30 fit between the cleatsso. as to guide the timbers up and down. In a like manner the timberssupporting the forward end of the box are guided up and down between theposts 2 and 5. A crosspiece 39 is rigidly mounted between the posts 3and 4 some distance below the box, and asimilar crosspiece '40 isrigidly mounted between the posts 2 and 5. A cam shaft 41 is'mounted' inbearings 42 and 43 uponthe crosspieces 40 and 39. Eccentric cams 44 and45 are'fixed uponthe cam shaft 41. Cam brackets 46 and 47 are fixedtothe bottom 13 ofthe box 12 and ex tend downwardly to engage theeccentric cams 44 and 45. The cam bracket 47 consists of two verticalparallel arms 48 and 49 long enough to allow the box 12 to go up anddown to the desired'extent, and the eccentric cam 45 fits between thesearms, so that as the shaft rotates the box 12 is reciprocatedtransversely.

The brackets 25 and 26 and therollers 23 and 24 are adapted to traveltransversely The cam bracket as is similar to the cam bracket 47. Aknuckle joint 50 is connected to the forward end of the cam shaft 41, anextension shaft 51 is connected to the knuckle oint 50, a second knucklejoint 52 is connected to the extension shaft 51, a second extensionshaft 53 is connected to theknuckle joint 52, a worm ear transmission54- is connected to the second extension shaft 53, and a motor ismounted upon the platform 1, and the motor shaft is connected to theworm gear transmission 54 by a shaft 56, so that as themotor operatesthe box 12 is reciprocated transversely of the frame.

Gear racks 57, 58, 59 and 60 are fixed to the platform 1, segmentalgears 61, 62, and 6-1- lit upon the gear racks, arms 65, 66, 67 and 68are secured to the segmental gears, downvardly inclined notches 69 and70 are formed from the forward edges of the arms 68 and 67, and similarnotches are formed from the for ard edges of the arms 65 and Thereciproc ting frame 71 has side bars 72 and 73, and end bars 74: and 75connecting the ends of the side bars. Studs 76 and 77 extend from theside bar 73 into the notches 69 and 70, and similar studs extend fromthe side bar 72 into the notches in the arms and 66 so as to support theframe 71 in a horizontal position above the box 12. Notehes 7S and 79are formed in the arms 68 and 67 near their upper ends, and similarnotches are formed in the arms 65 and 66, so that the frame 71 may braised and the stud 76 and 77 placed in the notches of the arms 65 and66 and in the notches 78 and 79of the arms 67 and 68 to hold the frameelevated from the box 12 when'the box is being cleaned.

A link 80 connects the. upper end of the arm 65 to a crank 81 carried bythe crank shaft 82 mounted in a bearing upon the upper cues of the postsS l and 85. A large belt wheel 86 is fixed upon the crank shaft 62, anda belt 8'7 connects the large belt wheel 'to a small belt wheel 88 uponthe shaft 56, so that as the motor operates the frame 71 is reciprocatedlongitudinally in ahorizontal plane. The segmental gears 61, 62, 63 and64 are concentric to the studs 76 and 77, so that asthe arms 65, 66, 67and 68 vibrate the frame 71 travels in a horizontal plane.

A plurality of rakes 89 is mounted be tween the side bars 72 and 73 andextend downwardly into the box 12. Each rake 69 consists of attachingplates 90 and 91 fitting against the inner faces of the side bars 73 and72, spacing arms 92 and 93 extending ii vardly from the inner ends ofthe attaching plates 90 and 91 over the upper edges of the sides 14 and15 and downwardly, the head 94- connecting the lower ends of the spacingarms 92 and 93, and spikes 95 driven downwardly through the head 94(-The spikes 95 are evenly spaced apart and of even length so as to passfreely above the bottom12.

A plurality of impellers 96 is mounted crosswise of the frame 71, therebeing a impeller 96 in front of each rake 89. Each impeller 96 comprisesa shaft 97 fixed with its ends in the side bars 7 3 and 72-, spacingcollars 98 and 99 upon the shaft, and a plurality of paddles 100arranged alternately with the plurality of spacing collars 101. Thepaddles 100 are preferably arranged to come in planes between thelongitudinal planes of the rake teeth 95.

Each paddle 100 comprises a flat piece of strap ironcut and bent to forma blade 102, and an elongated eye 103 ntting loosely upon the shaft 97.The shaft 97 is mounted above the head 9 1, so that the blade 102 mayswing to a vertical position against the front face of the head 94 whenthe frame 71 is moving backwardly and to swing freely away from the head9d. when the frame 71 is moving forwardly.

The parts 57 to 103 constitute the recip rocating agitator and impeller1049. The ore box 12 extends forwardly beyond the front end of thereciprocating agitator and impeller 1041 to form the feed space 105.

The ore concentrator thus constructed should be mounted or adjusted sothat the ore box 12 is substantially level. The ore bearing dirt may beplaced in the feed space 105 in several ways. If the dirt is handled dryto the concentrator it may be shoveled. into the space 105 by hand, andif the ore is being handled from a mill it may be discharged in the formof slop or sludge from a pipe.

The concentrator is designed especially for use in isolated places asupon a. desert place where there is no mill,.wherc the ore is to behandled in comparatively small quantity,and where water is an importantitem. Sufficient water must be supplied to the box 12 in proportion tothe ore to make a sloppy mass. When the motor is started the slop willbe agitated by the transverse reciprocation of the box 12 and thelongitudinal reciprocation of the agitator and i1 peller 104, and. atthe start the adjusting screws 10 and 11 will be manipulated to bringthe rake teeth 95 near the upper face of, the bottom 18, and as theconcentrator continues to operate the rake teeth will break up the lumpsand stir up the mass, and the impeller blades 102 will move the upperpart of the mass backwz'irdly leaving the ore values to settle upon thebottom 13. The lower ends of the blades 102 are above the lower ends ofthe teeth 95, so that the blades will move the upper part of themassbackwardly and not disturb the settled lower part of the mass. ater andore will be added to the box gradually and the water carrying the mudand waste material will flow over the gate 22 while the ore valuessettled upon the bottom 13 will not flow over the gate. As the depth ofthe ore increases the handwheels 33 and 34 will be manipulated to lowerthe'box and an additional gate 22 will be added from time to time. i

Thelast row of paddles 106 have their blades 10? cutshorter than theblades of the other rows, so that these blades 107 will pass just overthetop of the gate 22 to keep the gate clean, that is clear ofobstructions which would interfere with the even flow of muddy water.

The swinging action of the blades 102 serves to advance the mud towardthe rear end and alternately discharge the mud over the gate. I

When the mass of ore values in the box 12 has been increased to thedesired depth the agitator and impeller 104 is raised bodily to bringthe studs 76 and 77 into the notches 7 8 and 79 and then the ore may beshoveled out of the box.

Various changes may be made without departing from the spirit of ourinvention as claimed.

We claim:

1. An ore concentrator comprising an ore box having a feed end and adischarge end, means for reciprocating the ore box transversely, a framemounted above the ore box, rakes extending from the frame into the orebox, impeller blades pivotally and loosely mounted in front of the rakesand adapted to swing away from the rakes on the backward motion andagainst the rakes on the forward motion, and rolling pairs of side legsfor supporting and reciprocating said frame longitudinally andhorizontally.

2. Au ore concentrator comprising a platform, posts fixed verticallyupon the platform. crosspieces connecting the upper ends of the posts,adjusting screws mounted vertically through the centers of thecrosspieces, an ore concentrator box, timbers crosswise of the ore boxand under the ore box, rollers carried by the ore box and resting uponthe timbers and running transversely, rods extending upwardly from theends of the timbers. and second timbers connecting the upper ends of therods and connected to the adjusting screws, so that by manipulating theadjusting screws the ore box may be raised or lowered.

An ore concentrator comprising a plat form, posts fixed vertically uponthe platform. crosspieces connecting the upper ends of the posts,adjust..'ng screws mounted vertically through the centers of thecrosspieces, an ore concentrator b timbers crosswise of the ore box andun the ore box, rollers carried by the ore boxand resting upon thetimbers and running transversely, rods extending upwardly from the endsof the timbers, second timbers connecting the upper ends of the rods andconnected to theadjusting screws so that by'manipulating the adjustingscrews the box may be raised or lowered, a shaft mounted longitudinallyof the ore box and below the ore box, cam brackets extending downwardlyfrom the ore box, and eccentric cams upon the shaft and engaging the cambrackets so as to reciprocate the ore box transversely by the rotationof the shaft.

4c. In an ore, concentrator, a platform, gear racks fixed to theplatform, segmental gears fitting upon the gear racks, arms secured tothe segmental gears and having sets of downwardly inclined notchesextending from their side edges; one set above another,'a reciprocatingframe having studs extending from its sides and fitting in the set ofnotches, so that the frame may be raised bodily by raising the studsfrom one set of notches to the next, a link connected to the upper endof one arm, a crank connected to the link, and means for rotating thecrank to reciprocate the frame back and forth endwise.

' 5. A concentratlng apparatus comprlsing a pulp or material box; meansupon which the box is mounted for rectilinear movement in a horizontalplane; means for actuating the box with to and fro motions; an organizedagitating and raking mechanism also mounted for movement; means forsupporting the said mechanism for rectllinear movement in a horizontalplane and sub stantially parallel to the path of movement of theconcentrating box; and means for actuating the said mechanism, wherebythe raking depth is maintained constant. during operation.

6. A concentrating apparatus comprising a pulp or material box; meansupon which the box is mounted for straight linear movement in ahorizontal plane; means for actuating the box with to and fro motions;an organized agitating and raking mechanism, means for supporting thesaid mechanism for straight linear movement in a horizontal plane andsubstantially parallel to the path of movement of the concentrating box;means for actuating the said mechanism; and carriers for verticallymoving the box to vary the depth of immersion of the agitating andraking mechanism. j

7. concentrator comprising a concen trating box having a feed end and adischarge end and frames onwhich the box is 'movably supported, meansfor reciprocating 9. An ore concentrator comprising an ore trough, aframe mounted above said ore trough, rakes mounted on said frame anddepending into said o're trough, impeller blades pivotally and looselymounted on said frame in front of said rakes, and reciprocating meansadapted to swing said impeller blades from said rakes on the backwardmotion and against said rakes on the forward motion.

In testimony whereof We have signed our names to this specification.

EVERETT A. WVILLIAMS. ALBERT H. VAR-D.

